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Define inclusion-exclusion principle in data analysis?
Answer:
A counting principle that you may appear on a data analysis question is the inclusion-exclusion principle, which states that the number of elements in the union of two finite sets equals the count of the members in the two sets minus the number of elements in the intersection of the two sets. The number of elements in a set is denoted using two parallel lines, ||. Using set notation, the inclusion-exclusion principle for sets D and E is written as the following:
|D∪E| = |D| + |E| - |D∩E|
|D∪E| = |D| + |E| - |D∩E|
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